Film attaching means for reels



June 2 1953 1'. R. BlKO EI'AL 2,540,659

FILM ATTACHING MEANS FOR REELS Filed March 4, 1950 INVENTORS I THEODORE R. BIKO,

DANIEL s. DEUTSCH Patented June 2, 1953 TheodorelR. 'B'iko and DanieLSrDefltsch, .LosAngeleS, Calif.

ilppiieaiiion lvltardh 4, 1950, Serial N 0. ili 'fllflfi 1 Claims.

invention has toiidorgenerally with-mm ticn picture film reels, andis idirectedparticnlarly to improvements the type :of reel adapted for convenient and easy attachment of the film to the reel, by the provision of a holding element displaceable generally 'radiallyo-f the reel between an outer position of direct accessibility and an inner winding position at or within the hub "of the reel.

Heretofore therehave be'en 'proposals 'forsincorporating in a reel a :displaeeable film anchor or holding element, by various means :oharac terized, in comparison the'present invention, by their relative inconvenience in operation or undesirable structural teatures. Our -prima-ry object .is to provide improved reel :andraxdially movable film holder combination of ultimate simplicity and capacity for both anchoring the Inaccordance with the .invention,-we mayue uip any suitable specific form of reel with a holding element accommodated for free shuttling movement radially, or generallyradially or the reel, within slots so extended as to permit shitting pf the element to anouter portion near the periphery of the rim where the elementis easilyaocessihie for reception of the film to an inner and ing position within the hub.

The invention :ismore particularly concerned with the maintenance of the, holding element against inadvertent displacement from winding position within. the hub. In accomplishing this purpose, I provide for a simple looking shoulder arrangement engageable by the holding element necessarily by virtue of anyiappreciable "tension applied tothe film, or by virtue :of the angular position of the reel, so that :once returned from its outer film securing position to itsavindi-ng location in the hole, the holding element becomes efiectively heldagainst outward displacement simply as a result of the normal manipulation of FignB isanzenlargedcr ss section of the holding element taken in'the plane of "the film retaining detent; and I Fig. A is an enlarged fragmentary view showing a portionef. the reelandthe filmwholding element asl seen in Fig. 2 but man intermediate position.

Reterringifirst to the generalshowing .ofEig. 1,, the reel is .illustrated. typically gasscomprising a gpai-rwof parallelicircular sections) and. each. having {radial spokes-i2: extending from an attached hub shell 13 to a 'pircular rim IA. The hub shell I3 contains a recess: 15 within which v,is receivable la holding element l6 mounted for free slidingmovement outwardly and inwardly of the reel between :the (positions indicated in Figs. :1 andn2. As shown in the latter View, the holding element is receivable the .hu'bshell to-an extent .suchthat when locked in the ,Fig.,2 position, the element iii permits winding of the ,film .L'lin substantially complete circular form .on thelhubl Holding element. 156 comprisesa cylindrical body 18 carrying latcopposite ends a ,pair of axially alined end projections l9 which are sl'idahle within slots .20 mean opposite ,path .of. the reel spokes 172; The slots LZiOIeXQtendlg'eneralIy, radially of thereel, andmayube iormedon a truev or varied tosome'degree therefrom substantially as shown. Outward displacementlof the element T6 to the Fig. 1 position Jinwlhic'h it is directly and conveniently accessible ,for receptionofnithe film i1, is limited by. the engagement :of.,projectime 19 with the .outerendsfof the slots '21); In.- ward movement of the element ,may. be limited as shown'inIFig's. .2 ends by. engagement of the ,projec'tion's with theinner endsof thelslots. 21);.

As typically"illustrated in Fig, 3,,"the' Zholdin element it contains a longitudinalslotjfl within whichv may ,be inserted .a tree end oithefilm 11. The film may he held releasa'hly within the slotby any suitable means, thoughipreierabl-y by a ball 'detent 123 urged by .a coil spring 24 within the bore '25}; .sol'tha't the 'ballfletent. engages g'the dilni opposite a -,1':ecess..or. iniin'tatioh'fEB.

Thus the film is more secure'ly'held by reason of the tendency of the detent to deflect the film to a minor degree within the recess 26. Although thus held against accidental disengagement from the element, it may be readily removed by manually pulling the film out of the holder slot.

When in its innermost position radially of the reel, the holding element [6 is releasably locked against outward displacement, by the engageability of the projections l9 with either of shoulders 21 and 28 formed at opposite end preferably oifset locations, within the sides of the recesses 20. The function of the holding shoulders may be well considered by reference to Fig. 2 wherein after reception of the film, the holding element 16 has been returned to its normal position within the hub shell 13 in order to permit starting of the film winding. Assuming the reel to be rotated counterclockwise, the film tension transmitted to the element 5 causes it to rotate relative to the reel, with the result that the projections I9 are brought into engagement with shoulders 21. Thus the holding element is locked against outward movement and release or fouling of the film, as might otherwise result from the holding element being free to respond to centrifugal or gravitational force. If for any reason, such as the development 0 slackness in the film, there may be transmitted to the projections [9 force tending to rotate them relative to the reel and away from shoulder '2' or counterclockwise from the Fig. 4 solid line position, then the projections become engageable with shoulders 28 and the holding element is again locked against outward displacement. By

virtue of the relative offset of the opposed shoulders 2'! and 23, assurance is given that upon the release from shoulders 21 and some degree of outward displacement, whether due to gravity or centrifugal force, projections l9 under the in-' fluence of the film will be shoulders 28.

We claim:

brought to engage 1. The combination comprising a film reel having a hub portion, a holding element for retaining the end of the film and freely displaceable by gravity both outwardly and inwardly of the reel between positions adjacent the hub and peripheral portions thereof, and a pair of holding means releasably engageable by rotation of said element in opposite directions relative to the reel at a substantially single position radially thereof to retain the element in either of two positions against outward movement from the hub portion.

2. The combination comprising a film reel having a hub portion and parallel spokes extending outwardly therefrom to rim portions, a holding element for retaining the end of the film and freely displaceable within slots in said spokes by gravity both outwardly and inwardly of the reel between positions within the hub and adjacent said rim portions, said element comprising a substantially cylindrical body portion received within 'a recess in the'hub and a pair of end projections traveling with said slots, and holding shoulders formed in the edges of one of said slots said projections being positionable to engage said shoulders and thereby become retained against -movement outwardly from said hub portion by element for retaining the end of the film and having end projections freely displaceable within slots in said spokes by gravity both outwardly and inwardly of the reel between positions within the hub and adjacent said rim portions, and a pair of holding shoulders formed in opposite edges of one of said slots said projections being positionable to engage said shoulders and thereby become retained against movement outwardly from said hub portion by rotation of the element in opposite directions at a fixed position radially of the reel at the inner ends of the slots.

4. The combination comprising a film reel having a hub portion and parallel spokes extending outwardly therefrom to rim portions, a holding element for retaining the end of the film and freely displaceable within slots in said spokes by gravity both outwardly and inwardly of the reel between positions within the hub and adjacent said rim portions, and a pair of holding shoulders formed in opposite edges of each slot at locations offset longitudinally thereof said element being positionable to selectively engage said shoulders and thereby become retained against movement outwardly from said hub portion by rotation of the element at a fixed position radially of the reel at the inner ends of the slots.

5. The combination comprising a film reel having a hub portion and parallel spokes extending outwardly therefrom to rim portions, a holding element for retaining the end of the film and freely displaceable within slots in said spokes by gravity both outwardly and inwardly of the reel between positions within the hub and adjacent said rim portions, said element comprising a substantially cylindrical body portion received within a recess in the hub and a pair of end projections having opposite flattened faces traveling within said slots, and a pair of holding shoulders formed in opposite edges of each slot at near the inner ends thereof, locations offset longitudinally of the slot and selectively engageable by said element by its rotation in opposite directions in the slots to releasably retain the element against movement outwardly from said hub portion.

THEODORE R. BIKO. DANIEL S. DEUTSCI-I.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,172,349 Frappier Feb. 22, 1916 1,871,23d Proctor Aug. 9, 1932 1,899,279 Lessler Feb. 28, 1933 2,107,530 Goldberg Feb. 8, 1938 2,290,853 Frankel July 28, 1942 FOREIGN PATENTS Number Country Date 14,285 Great Britain of 1915 

